/**
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The ASF licenses this file to you under the Apache License, Version
 * 2.0 (the "License"); you may not use this file except in compliance with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
 * and limitations under the License.
 */

package org.apache.storm.trident.operation.builtin;

import org.apache.storm.trident.operation.BaseFilter;
import org.apache.storm.trident.tuple.TridentTuple;


public class Equals extends BaseFilter {

    @Override
    public boolean isKeep(TridentTuple tuple) {
        for (int i = 0; i < tuple.size() - 1; i++) {
            Object o1 = tuple.getValue(i);
            Object o2 = tuple.getValue(i + 1);
            if (o1 == null && o2 != null || o1 != null && o2 == null || !o1.equals(o2)) {
                return false;
            }
        }
        return true;
    }

}
